True/False Indicate whether the
statement is true or false.
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1.
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Segmentation is first observed in mollusks.
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2.
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In earthworms, food molecules are extracted from soil and absorbed into the
bloodstream through the intestinal wall.
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3.
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Earthworms have parapodia that aid in movement.
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4.
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Earthworms grind the soil in the gizzard
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5.
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Seastars are examples of gastropods
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6.
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An oyster is a type of bivalve.
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7.
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All mollusks except bivalves have radula.
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Multiple Choice Identify the
choice that best completes the statement or answers the question.
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8.
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A characteristic structure found in many mollusks is the radula, which is
involved in
a. | jet propulsion. | c. | eating. | b. | opening and closing of the
shells. | d. | reproduction. |
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9.
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Which of the following has a true coelom?
a. | flatworm | c. | rotifer | b. | roundworm | d. | mollusk |
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10.
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Refer to the illustration above. The organism shown is a
a. | bivalve. | c. | snail. | b. | cephalopod | d. | gastropod. |
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